The fossil record provides irrefutable evidence that species have changed dramatically over geological time.
化石记录提供了无可辩驳的证据，表明物种在地质时期发生了巨大变化。
Which choice best defines “irrefutable”?
C — Impossible to disprove.. “irrefutable” means Impossible to disprove..
Which word means “Impossible to disprove.”?
D — irrefutable. “irrefutable” means Impossible to disprove..
irrefutable — Impossible to disprove.. In Chinese: 无可辩驳的；确凿的.
irrefutable is pronounced //ˌɪrɪˈfjuːtəbl//.
The fossil record provides irrefutable evidence that species have changed dramatically over geological time. (化石记录提供了无可辩驳的证据，表明物种在地质时期发生了巨大变化。)
indisputable, undeniable, incontrovertible — all close in meaning to irrefutable (Impossible to disprove.).
refutable, questionable — each the opposite of irrefutable (Impossible to disprove.).
Yes. irrefutable is on the SAT Prep Difficult list — the higher-register words that decide the hard questions. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
ir(不) + refute(驳斥) → 驳不倒。